Siren.



A. C. WOODWARD.

SIREN.

APPLICATION F1L1-1D1u1Y18.1917.

1.2&5,299. Patented Nov. 6, 1917.

2 SHEETS-SHEET l.

juve/Mofo A. C. WOODWARD.

SIREN.

APPLICATION HLED JULY 18. 1917.

1 ,245,299. Patented Nov. 6, 1917.

2 SHEETS-SHEET 2.

... WW W! UNTED STATES PATENT @Fl-HCE.

ARTHUR C. WOODWARD, OF CRANFORD, NEW JERSEY, ASSIGNOR T0 THE A. 8c F.BROWN COMPANY, 0F ELIZABETHPORT, NEW JERSEY, A CORPORATION OIE?A NEWJERSEY.

SIREN.

Specification 0f Letters Patent.

Patented Nov. 6,y v191-7.

To all whom it may concern Be it known that I, ARTHUR C. `WooDV WARD, acitizen of the United States, and a resident of Cranford, in the countyof Union and State of New Jersey, have invented certain new and usefulImprovements in Sirens, of which the following is a specification,reference being made to the accompanying drawings, forming a partthereof.

My invention relates particularly to sirens for use on submarines, thesiren being so constructed and operated that it may immediatelybe in acondition for use as soon as the siren emerges above the surface of thewater. Heretofore such submarine sirens have been incapable for useuntil the water has been removed or blown out by the compressed air usedto operate same, which requires some time and is a great disadvantage,particularly in severe winter weather, since the sirenmechanism islikely tobecome immediately clogged bythe formation of ice upon exposureto the air as the submarine rises to the surface.

The principal object of my invention is, among other things, to providea siren construction which shall automatically and immediately drainitself upon the emerging of the submarine from below the surface of thewater, and will also automatically seal itself when the siren isoperated by compressed air or other gas under pressure. The novel andimproved construction of my siren is illustrated in its preferredembodimentsv in the accompanying drawings and is particularly pointedout in the following specification and appended claims.

.In the drawings, Figure 1 is av vertical sectional view taken on theline 1-1 of Figli;

Fig. 2 is a sectional plan View taken on the line 2--2 of Fig. 1;

Fig. 3 is a sectional plan view taken on the line B-Srof Fig. 1;'

Fig. 4 is a sectional plan view taken on the line oftFig. 1;

Fig.' 5 isa vvertical sectionalv View, partly in elevation of a:modifiedV form` 'of ymy invention; and

Fig. 6 is a sectional plan view taken on the .line 6---6 :of 5.v

r.Similar numerals refer to simi-larv :parte throughout -th'efsereraltierras Referring to the drawings, 7 indicates the outer hollow body ofthe siren having the passage 8 connected by a pipe to a source ofcompressed air, or other gas held in a suitable container underpressure, which air or gas operates the siren. Mounted on the upper rimof the outer body 7 is the depending cup-shaped casing 9, andtheupwa-rdly extending' trumpet 10 secured to thel body 7 by the screws11 as shown inv Fig. 1. EX tending upwardly from the center of thebottom 12 of thev casingl 9 is bolt 13 which is screwfthreaded into thebottom 12 as shown. and held rigidly in place by the nut 14; The bolt 13carries the vsleeve 15 between the lower and upper washers 16 and 17respectively, the washerk 17 being held in position on top of tliesleeve15 by the n ut 18 as shown. Rotatablv mounted on the sleeve 15 is thesiren 19 which is cup-shaped in formation and adapted to revolve withinthev casing 9, the outercylindrical surface of the siren 19- coactingclosely with the inner -surfaces of the casing 9 as show-n in Figs, 1.and 3. The lower portion of the -siren 19 is constructed with a seriesof slots 20, the intermediate sections 21 between the slots beingtapered in opposite directions as shown in Fig. 2 so that the compressedair or vgas in passingy through the oppositely-disposed oblique ports 22formed in the casi-ngt) may successively impinge against the sections 21and then pass through the slots 20 thereby imparting a rapidly rotatingmovement 'toV the siren 19 in the direction of the arrow shown in Fig.2. The upper part of the siren 19has a plurality of vertically elongatedslots 23 which are adaptedV to produce the rapidlysucceeding sounds ortympanic shocks common in sirens as the compressed air or gasalternately passes through the port 24 and the successive slots 23 asthe sireny Y1,9 israpidly rotated. A small drainage port 25l connectsthe bottom of the 'siren 19 with the interior bottom portion of thecasing which in turn is connected tothe atmosphere by the pipe .26.

Upon the bottomY ofthe siren 119 l have secured two. automatic governors2T which are. mounted and swing on the -pirobpus 28 aliziedv to the.bottom of the Silen- 119*r shown. Theggovernorsg? are so shapedns.:

, tri-.have :an .outer circular surface-.29ct the.

Aand ports 22, and whatever ivater 2 Lasagnea same Concentricity as theinner surface of the casing 9, as shown in Fig. 4. is the siren 19revolves the governors 27 bear frictionally against the casing 9 throughcentrifugal force, thereby preventing the siren from rotating at anabnormal speed or velocity; it is obvious that the governors areself-acting and that the friction produced by their coaction with thecasing- 9 increases with the velocity of the siren 19.

Mounted on the cross bar 30 transversely Within the lower part of theouter body 7, is the valve lever 3l, the longer and heavier' arm 32having` the valve 33 adapted to normally rest on the valve seat 34formed on the top of the passage S as shown in Fig. l. The shorter arm35 carries the valve 36 adapted to coact with the port 37 formed on thetop of the pipe 38 Which leads to the atmosphere. The construction issuch that when the valve 33 is resting on its seat 34, the valve 3G islifted from the port 37,'so that when the siren is out of operation, theinterior of the body 7 is cutoff from the passage S but is open to theatmosphere through the pipe 38.

The operation of my improved siren is substantially as follows: 1Whenthe subma- Vrine rises to the surface the Water that has collected inthe hollow body 7, casing 9 and trumpet l0 at once drains downwardlythrough the slots 23 and port 24 into the holloiv body 7; also throughthe slots 2O remains in the bottom of the siren 19 passes through theport 25 and thence through the pipe 26. The Water in the body 7 rapidlypasses through the pipe 38 and no Water can pass into the passage 8 andthence into the compressed air tanlfs since the valve 33 closes suchpassage. `When the operator wishes to blow the siren, the force of thecompressed air or gas at once lifts the valve 33, thereby admitting thecompressed air to the body 'i' to operate the siren, and simultaneouslyclosing the valve 35 on the port 37 thereby shutting ofi' the hollowbody 7 from the atmosphere.

In the modilied form shown in Figs. 5 and 6, the body 39 is so shaped asto have the passage 40 of a closed cylindrical formation Within which isreciprocated the valve member 42 having the port 43 adapted to registerwith the port 44 ivhen the valve 42 is in its upper position, therebyproviding free communication between the compressed air pipe 45 and theinterior of the body 39. Oppositely-disposed-to the port 44 is the port46 leading to the atmosphere. rl`he lug 47 carried by the valve 42 andadapted to be reciprocated in the vertical groove 48 formed in theinterior orn the passage always maintainsvthe ports 43 and 44 in propervertical alinement. Then the siren is out of operation the valve is inits lower position, as

shown in Fig. 5, due to gravity, in which position the interior of thebody 39 is in free communication Yith the atmosphere for drainagethrough the ports 44 and 4G. hen the siren is to be operated theI forceof the compressed air or gas at onceraises the valve 42 to its upper orraised position in which the port 46 is closed and ports 43 and 44 arein register. This upper position is obviously maintained so long as thecompressed air or gas passes upwardly from the pipe 45 into the interiorof the body 39. In the appended claims the compressedl air or gas whichoperates my improved mechanism is broadly designated as a fluid.

lt will be understood that the siren construction herein shown anddescribed may be variously `modilied and changed Without departing fromthe principle and scope of my invention, and it will be understood thatthe invention is not limited to any particular form except in so far assuch limitations are set forth in the claims.

l claimas my invention s f y K l. The combination with a sirenconstruction, of means for introducing compressed fluid through thesiren, means for drainingthe siren, and coacting means in one positionclosing said compressed fluid means and opening said draining means andin a second position opening said compressed fluid means and closingsaid draining means.

2. The combination vvithva siren construction, of means 'forintroducingcompressed fluid through the siren, means for draining thesiren. and coacting leans in one position closingV said compressed fluidmeans and opening said draining means, and'in a second position openingsaid compressed fluid means and closing said draining means, said meansin said second position being operable bv the introduction of saidcompressed fluid.

` 3, The combination with a siren construction. of means for introducingcompressed fluid through the siren, means for draining the siren,and'coa'cting means in one position closing said compressed fluid meansand opening said draining means, and in a second position opening saidcompressed fluid means andclosing said draining means. said means insaid second position being operable and maintained only by theintroduction of said compressed fluid. l

4. The combination with a siren construction, of means for introducingcompressed lluid through the siren, means for draining the siren, andmeans, normally closing said compressed fluid means and opening saiddraining means` for closing said draining means when compressed fluid isintroducedinto the siren.

5. The combination with a siren construction. of means for introducingcompressed uid through the siren, means for drainingthe siren, andautomatic means, normally closing said compressed fluid means andopening said draining means for closing' said draining means whencompressed fluid is introduced into the siren.

6. The combination with a siren construction, of means for introducingcompressed fluid through the siren, means for draining' the siren, andmeans, normally closing said compressed fluid means and opening saiddraining means, operable by said compressed fluid, for closing saiddraining means when compressed fluid is introduced into the siren.

'7. The combination with a siren construction, of' means for introducingcompressed fluid vthrough the siren, means for draining the siren, andan automatic valve member, normally closing said compressed fluid meansWhile maintaining the draining means open, for closing said drainingmeans when the compressed fluid means is open.

ARTHUR C. W'OODWARD.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

